The GenRad 1531 Strobotac electronic stroboscope is a small portable flashing-light source used to measure the speed of fast-moving devices or to produce the optical effect of stopping or slowing down high-speed motion for observation. A few of this instrument's many uses are:

The GenRad 1531-AB Strobotac electronic stroboscope includes a strobotron lamp and reflector assembly, an electronic pulse generator that controls the flashing rate, and a line-operated power supply. The flashing-rate range of 110 to 25.000 flashes per minute is divided into three direct-reading ranges; toavoid reading errors, only the particular range in use is illuminated. The rpm control is concentric with the range selector, and its large diameter provides precisecontrol of the flashing rate. The flash lamp can be triggered externally to "stop" motion for photography. The combination of the Type 1531-P2 Flash Delay and the Tyte 1536-A Photoelectric Pickoff can be used as an external triggering source, which also provides an adjustable delay of the stroboscope flash with respect to the triggering pulse from the photoelectric pickoff.

A built-in calibration system within the GenRad 1531 Stroboscope uses the power-line frequency for quick, easy check and readjustment of the flashing-rate calibration. The strobotron flash lamp and reflector assembly pivots in a plane perpendicular to the panel and swivels 360 degrees on its own axis. The case is equipped with 1/4 x 20 socket for mounting the instrument on a tripod

1531 Stroboscope Basic Specifications: (Full specifications can be found on the datasheet)